<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/1 (2).jpg" alt>
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主体 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollapse ? '64px' :'200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <el-menu
          background-color="#2F3744"
          text-color="#fff"
          active-text-color="#1495E7"
          :unique-opened="true"
          :collapse="isCollapse"
          :collapse-transition="false"
          :router="true"
          :default-active="activePath"
        >
          <el-submenu :index="item.id+''" v-for="item in menuList" :key="item.id">
            <template slot="title">
              <i :class="iconObj[item.id]"></i>
              <span>{{item.authName}}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item
              :index="'/'+subItem.path"
              v-for="subItem in item.children"
              :key="subItem.id"
              @click="saveNavState('/'+subItem.path)"
            >
              <template slot="title">
                <i class="el-icon-menu"></i>
                <span>{{subItem.authName}}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 右边内容 -->
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>
<script>
export default {
  data() {
    return {
      //后端获取的侧边栏data数据
      menuList: [],
      //自定义icon图标
      iconObj: {
        '125': 'iconfont icon-users',
        '103': 'iconfont icon-tijikongjian',
        '101': 'iconfont icon-shangpin',
        '102': 'iconfont icon-danju',
        '145': 'iconfont icon-baobiao'
      },
      isCollapse: false,
      activePath: ''
    }
  },
  created() {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    //退出的事件函数
    logout() {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList() {
      const { data: res } = await this.$http.get('menus')
      console.log(res)
      if (res.meta.status != 200) {
        return this.$message.error(res.meta.msg)
      }
      this.menuList = res.data
    },
    //折叠展开功能
    toggleCollapse() {
      this.isCollapse = !this.isCollapse
    },
    //保持激活active地址
    saveNavState(activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath =activePath
    }
  }
}
</script>
<style lang="less" scoped>
.home-container {
  height: 100%;
}
.el-header {
  background: #353c41;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #fff;
  padding-left: 0;
  div {
    display: flex;
    align-items: center;
    img {
      height: 60px;
      width: 60px;
      border-radius: 50%;
    }
    span {
      margin-left: 10px;
    }
  }
}
.el-aside {
  background: #313744;
  .el-menu {
    border-right: none;
  }
  .toggle-button {
    background: #485066;
    color: #fff;
    text-align: center;
    cursor: pointer;
    line-height: 24px;
    letter-spacing: 0.2em;
  }
}

.el-main {
  background: #e9edf2;
}
.iconfont {
  margin-right: 10px;
}
</style>
